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Fast identification method for plant dyed yarn and chemical dyed yarn bleaching

A plant dyeing and yarn technology, applied in the direction of chemical reaction analysis of materials, material analysis through observation of the influence of chemical indicators, scientific instruments, etc., can solve the problem of identification of plant dyeing and chemical dyeing. Non-toxicity, inability to bleach plant dyed products, difficulty in rapid identification, etc., to achieve the effect of easy identification, easy operation, and short time-consuming

Active Publication Date: 2019-07-09
QINGDAO UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, there are three major technical difficulties in the above-mentioned technology: one is that the bleaching time of the dyed products in the conventional bleaching process is too long, generally 1 hour, and it is difficult to meet the requirements of rapid identification; the other is that the conventional bleaching process cannot bleach all color plant dyed products , the identification of plant dyeing and chemical dyeing is not universal; third, the conventional bleaching process has a similar bleaching speed to certain colors of plant dyeing and chemical dyeing products, that is, there is a phenomenon of both discoloration or bleaching at the same time, so there is no identification Ability

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0036] Add chlorite, activator and penetrant to distilled water to mix evenly; the concentration of sodium chlorite is 12% (w / w), the amount of activator ammonium acetate is 10% (w / w), and the penetrant JFC The addition amount of the reagent was 5% (w / w); then concentrated sulfuric acid was added at room temperature, and the pH value was adjusted to 2 to complete the preparation of the reagent. Measure 5 mL of the above reagent into a 10 mL beaker.

[0037] Weigh 1g of chemically dyed red yarn, quickly dip it into the beaker with tweezers for 3s and quickly take it out, place it on the white identification board, the yarn has no color change after 10s, the analysis confirms that the above yarn is chemically dyed yarn, the experimental results consistent with the actual situation.

Embodiment 2

[0039] Add chlorite, activator and penetrant to distilled water to make it evenly mixed; the concentration of sodium chlorite is 8% (w / w), the amount of activator ammonium acetate is 6% (w / w), the penetrant JFC The addition amount of the reagent is 2% (w / w); then add concentrated hydrochloric acid at room temperature, and adjust the pH value to 1 to complete the preparation of the reagent, and measure 5 mL of the above reagent into a 10 mL beaker.

[0040] Weigh 1g of plant-dyed yellow yarn, quickly dip it into a beaker with tweezers for 2 seconds and quickly take it out, place it on a white identification board, the yarn turns white after 2 seconds, and analyze and confirm that the above-mentioned yarn is plant-dyed yarn. Experimental results consistent with the actual situation.

Embodiment 3

[0042] Add chlorite, activator and penetrant to distilled water to mix well; the concentration of sodium chlorite is 5% (w / w), the amount of activator ammonium acetate is 5% (w / w), the penetrant JFC The addition amount of the reagent was 3% (w / w); then concentrated sulfuric acid was added at room temperature, and the pH value was adjusted to 3 to complete the preparation of the reagent. Measure 5 mL of the above reagent into a 10 mL beaker.

[0043] Weigh 1g of plant-dyed red yarn, quickly dip it into the beaker with tweezers for 2s and take it out quickly, place it on the white identification board, the yarn turns pink after 1s, and turns white after 8s, and the above yarn is determined by analysis Dyeing yarn for plants, the experimental results are consistent with the actual situation.

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Abstract

The invention discloses a fast identification method for plant dyed yarn and chemical dyed yarn bleaching. The fast identification method comprises the following steps that chlorite, activators and penetrating agents are added into distilled water respectively, thus the concentration is 6%-10% of the chlorite, 1%-5% of the activators, and 1%-5% of the penetrating agents, a solution is prepared andobtained, then inorganic acids are added to the solution, the pH value is adjusted to 1-3, and a special reagent is prepared; the specific reagent is measured and taken, a tweezers is used for completely immersing yarn in the special reagent 2-3 s, and then the tarn is quickly taken out and place on a white identification plate; yarn color change on the white identification plate is observed within 1-10s after the yarn is taken out, and if the yarn fades or turns white, the yarn is plant dyed yarn; and if the yarn has no color change, the yarn is chemical dyed yarn. The fast identification method has the advantages of having simple and convenient operation, simple and easy identification, short time consumption, accurate result and generality, and identification time of plant dyeing products is less than 10s.

Description

technical field [0001] The invention relates to the field of textile industry, in particular to a method for quickly and accurately identifying vegetable-dyed yarns and chemically-dyed yarns. Background technique [0002] Vegetable dyes are extracted from natural plants, and are generally used to dye loose yarns and then processed into textiles. In recent years, due to the advantages of greenness and safety brought by the natural properties of plant dyes, they have been praised by manufacturers and consumers, so the output of plant dyes has increased year by year. [0003] Existing a large amount of vegetable dyeing products circulates on the market now, and it satisfies the needs of different consumers simultaneously with chemical dyeing products. However, so far, there is no standard identification method for plant dyes and chemical dyes. It has caused confusion in the quality of some plant dyeing products on the market, and some chemical dyeing products are counterfeit ...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
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Application Information

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IPC IPC(8): G01N21/78D06L4/26
CPCG01N21/78D06L4/26G01N2021/775
Inventor 韩光亭姜伟李明霞李显波张元明
Owner QINGDAO UNIV
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